pMak26

iTrader: (1)

Does anyone know what this box is that was located right next to the ECU in a '99 Trans Am LS1 T-56 car?

All it says on it is "Guide" and it has a 4 pin connector with connections labeled A-B-C-D and a 3 pin connector with A-B-C.

pMak26

iTrader: (1)

I've been told this black box may be for a throttle by wire.

RixTrix

No part # to goggle?

phoenix rises

iTrader: (3)

i think its for the headlight motors

pMak26

iTrader: (1)

No part number on the box anywhere. Could be for headlight motors, would make more sense as it was out of a '99 trans am.

Russ K

iTrader: (1)

That's the headlamp door opening actuator control module. And it slides into a bracket that's part of the underhood electrical center in the LF corner of the engine bay.

Russ Kemp

pMak26

iTrader: (1)

Hey Russ, Thanks for the confirmation!

2xLS1

iTrader: (25)

And it's not anywhere close to the ECU like you said in your first post.

pMak26

iTrader: (1)

Apologies, that is what I was told. I did not pull the ECU. The guy I purchased the ECU from said it was "right next to the ECU and looked important so I grabbed it"

This was out of a wrecked car... so it may have very well wound up next to the ECU!